摘要:
A humidity meter includes a humidity-frequency converter (2) which is essentially a pulse oscillator, the oscillation frequency of which depends upon the impedance of a humidity sensor (1), a differentiation circuit (3) and a wave-form shaping circuit (4) which essentially operate as a pulse width modulator for adjusting pulse width of an output pulse of the converter (2) for assuring a linear relationship between humidity and the output signal, and an integrator (6) for integrating the output of the pulse width modulator to provide an output signal as a DC level. A feedback path (5) is provided to apply the output signal to the pulse width modulator for assuring a linear output irrespective of the exponential characteristics of the humidity sensor. Said differentiation circuit (3) has a capacitor (31), a first variable impedance element (32) which is controlled by said feedback path , and a second variable impedance element (33) coupled in series with the first variable impedance element (32).
摘要:
A light recording medium which has a substrate and a recording layer provided thereon and effects recording of information by selective removal or deformation of the recording layer by laser light, which is characterized by that said recording layer contains an organic dye as a light absorber, said dye is a mixed dye obtained by mixing a plurality of dyes having different light absorbing wavelengths from each other and the recording layer has a light absorptivity of 80% or more at all the wavelengths in the range of 400-900 nm in wavelength.
摘要:
A color image pickup system for a color television system comprises a single image pickup device, a color filter mounted in front of the screen of said image pickup device, said color filter having an array of the repetition of a pair of horizontal colored belts or scanning lines, the first scanning line having an arrangement of cells of the three elementary colors, the second scanning line having an arrangement of the complementary elementary colors to those of the first scanning line. Thus, the colors of each pair of cells in the vertical direction of the two scanning lines are complementary. The output of the image pickup device is processed by adding the signals of the first scanning line and the second scanning line for every vertical cell to provide a brightness signal(Y). As a color signal, only the first scanning line is selected and a pair of color cells (red and blue) are sampled. Thus, the horizontal resolution of the brightness signal is the same as that of the image pickup device itself, and a clear picture with high resolution is obtained in a single image pickup device system.
摘要:
A video recording system with a plurality of fixed recording-and/or-playing-back magnetic heads has been disclosed. A video signal with a wide frequency band is converted using an Hadamard conversion circuit, to a plurality of narrow band signals. Each narrow band signal is recorded and played back by each fixed head. The Hadamard conversion circuit is very simple in structure and can be provided with digital switching circuits and adders or integrators.
摘要:
An image processing apparatus according to the present invention includes an image acquisition section acquiring a multiple overlapping image in which a subject image is multiplexed, a filtering section filtering the multiple overlapping image acquired by the image acquisition section, a similarity calculation section calculating similarity between overlapping images contained in the multiple overlapping image filtered by the filtering section, and an overlapping image displacement calculation section using the similarity obtained by the similarity calculation section to calculate overlapping image displacement in the multiple overlapping image.
摘要:
A humidity meter has a housing (1) which has a separated sensor room (5) recessed in said housing (1) for securing a humidity sensor assembly (3). The humidity meter also has an electronic circuit (2) mounted on a printed circuit board (21) fixed in said housing (1), for processing humidity signal supplied by said humidity sensor assembly (3). Some examples of the process are analog-digital conversion of measured humidity signal, visible indication on a display screen, and/or interface with external circuit. Said humidity sensor assembly (3) is removably fixed on said printed circuit board (21) which doubles as a bottom wall (53) of said sensor room (5).
摘要:
A humidity meter includes a humidity-frequency converter which is essentially a pulse oscillator, the frequency of which depends upon the impedance of a humidity sensor, a pulse width modulator for adjusting pulse width of an output pulse of the converter for assuring a linear relationship between humidity and the output signal, and an integrator for integrating the output of the pulse width modulator to provide an output signal as a DC level. A feedback path is provided to apply the output signal to the pulse width modulator for assuring a linear output irrespective of the exponential characteristics of the humidity sensor.
摘要:
A method for erasing a light recording medium comprising a thermoplastic resin having a number average molecular weight of 30,000 or less wherein a recording pit is refilled by using a light beam diameter greater than the pit diameter.
摘要:
The present invention relates to a counter feed mechanism as used in digital clock comprising a cam member adapted for advanced rotation and another cam member adapted for delayed rotation both arranged on a common axis so that the advanced rotation of the first-mentioned cam member under a drive force transmitted from a clock mechanism twists a coil spring stretched between both cam members, which is, in turn, charged with energy for rotation of the second-mentioned cam member and, upon rotary displacement of the first-mentioned cam member by a predetermined angle, said second cam member is released to be rotated at once so as to advance a rotary wheel step by step.
摘要:
An optical recording medium has deposited on a substrate a recording layer incorporating therein a cyanine dye, preferably an indoline dye, and optionally incorporating therein an autoxidizable compound or a thermoplastic resin andr a singlet oxygen quencher.